Blank for forming the shanks of pipe-wrenches.



G. HBCKLING. BLANK FOR FORMING THE SHANKS 0E: PIPE WRENOHES.

' APPLIQATION FILED JUNE so, 1913.

1,091,220. Patented Mar. 24, 1914.

j ED222502 TJNTTED sTATEs PATENT oEEIoE.

GEORGE HEGKLING, OF CLEVELAND, OHIO.

BLANK FOR FORMING THE SHANKS OF PIPE-WRENCHES.

To all whom it may concern Be it known that I, GEORGE HEOKLING, a citizen of the United States of America, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Blanks for Forming the Shanks of Pipe- Wrenches; and I hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

This invention relates to an improved blank, as a new article of manufacture, for forming the shank of a pipe-wrench.

One object of this invention is to produce a blank of the character indicated which can be readily bent into the shape required to form an inexpensive shank of the character indicated which has a strong and durable handle and has two parallel spaced racks arranged forward of said handle and extending longitudinally of the shank.

Another object is to provide said blank in its forward end with a recess which, when the blank is bent as required to form the aforesaid shank, has its walls forming a guide for accurately positioning a solid steel jaw relative to the forward end of the shank preparatory to welding said jaw to the shank.

With these objects in view, this invention consists in a blank consisting of a rolled steel plate having the configuration and features hereinafter described, pointed out in the claims, and illustrated in the accompanying drawings.

In said drawings, Figure 1 is a plan of my improved blank. Fig. '2 is a transverse section on line 22, Fig. 1, looking rearwardly. Fig. 3 shows the side portions of the blank bent toward each other as required to form a bar which is U-shaped in crosssection and to bring the serrated side edges of the forward portion of the blank into position forming the hereinbefore mentioned racks and to internally brace the handle to be formed of the rear portion of the blank. Fig. 4 is a transverse section on line 44, Fig. 8, looking forwardly. Fig. 5 is a transverse section on line 55, Fig. 3, looking rearwardly. Fig. 6 is a view corresponding with Fig. 3, except that Fig. 6 shows the side members of the bar illustrated in Fig. 3 bent toward and into contact with each other rearwardly of the aforesaid racks. Fig. 7

Specification of Letters Patent.

Application filed June 30, 1913.

toward said extremity.

Patented 24, 1914. Serial No. 776,487.

is a transverse section on line 7'7, Fig. 6, looking forwardly. Fig. 8 is a side elevation of a finished shank and illustrates the utility of a recess formed in the forward end of the blank, and a portion is broken away in Fig. 8 to reduce the size of the drawin My improved blank for forming of a pipe-wrench consists, as shown in Fig. 1, of an oblong plate A of rolled steel, which plate is serrated at the side edges of its forward portion to form racks 10 which extend longitudinally of said portion of the plate. Said portion of the plate is narrower than but arranged cent-rally between the side edges ofthe rear portionv of the plate and provided in its forward end with a recess which has a forwardly facing central wall 12 arranged centrally between the side edges of said forward portion of the plate and eX- tending widthwise of the plate more than a third of the width'of said forward portion of the plate, and the two side walls 13 of said recess extend from opposite ends respectively of said central wall to opposite side edges respectively of said portion and to the forward extremity of the plate and diverge The rear and wider portion of the plate has two lugs 14 consisting of portions struck from the plate and projecting laterally of one and the same side of the plate, as shown in Fig. 2. The lugs 14 are arranged in line edgewise and spaced widthwise of the plate a distance substantially equal to one third of the width of said rear and wider portion of the plate and spaced substantially equidistantly from opposite side edges re spectively of said portion of the plate.

Figs. 3, 4, 5, 6 and 7 are illustrative of the operations required to convert the blank illustrated in Figs. 1 and 2 into the shank of a pipe-wrench preparatory to the application of a solid steel jaw to the forward end of the shank. Figs. 3, 4 and 5 illustrate a bar which is U-shaped in cross-section and formed by bending the side portions of the plate A, Fig. 1, toward each other far enough to bring the lugs 14 into contact with each other and to bring the serrated side edges of the forward portion of said plate into a position in which the racks 10 formed by said edges, as hereinbefore described, are parallel and face in one and the same direction. When the plate shown in Fig. 1 has been bent to form the U-shaped bar illustrated in Figs. 3, 4 and 5 the rear the shank handle of said shank and extends from the the shank but that the application of a movportions of the side members of said bar (see Figs. 6 and 7 are bent, as at 15, to bring the longitudinal edges of said bar into contact with each other, as at 16, between the racks and the rear end of the bar and thereby complete the formation of the handle of the shank, and thereupon a solid steel jaw B, contoured as required to abut against the walls 12 and 13 of the hereinbefore mentioned recess, is placed in position at the forward end of the shank, as shown in Fig; 8, in which position said aw abuts against said wall preparatory to welding said jaw to said walls and projects from the shank in the direction in which the racks 10 face, and said jaw has a serrated face which faces in the direction of the shank to the outer extremity of the aw. I would here remark that the shank shown in Fig. Sis adapted to receive a movable jaw (not shown) adapted to cooperate with the stationary jaw B and movable endwise of able jaw to the shank of a pipe-wrench is too well known in the art to require illustration and description in this specification. Suffice it to state that the racks 1O hereinbefore described are adapted to mesh with pinions (not shown) carried by said movable jaw, and that said pinions and said racksare employed for preventing movement of the movable jaw from the stationary jaw during the work-gripping operation of the jaws.

Referring again to the configuration of the blank illustrated in Figs. 1 and 2, it will be observed that the serrated side edges of the forward portion of the plate A are adapted to form the racks of the completed shank; that the walls 12 and 13 of the recess in the forward end of said plate are adapted to form a guide for effecting an accurate positioning relative to the forward end of the shank of the jaw B to be welded 1 to said end of the shank; that the rear portion of the plate is wider than the forward portion of the plate to permit of the side edges of said rear portion of the plate to be brought into contact with each other to complete the formation and strengthen the handle of the shank, and that the lugs 14- are adapted to brace said handle internally.

What I claim is 1. A blank for forming a shank of a pipewrench, said blank consisting of an oblong plate of rolled steel, which plate has the side edges of its forward portion serrated and forming racks.

2. A blank for forming the shank of a pipe-wrench, said blank consisting of an oblong plate of rolled steel, which plate has its forward portion narrower than but arranged centrally between the side edges of the rear portion of the plate, said forward portion of the plate having its side edges serrated and forming racks.

3. A blank for forming the shank of a pipe-wrench, said blank consisting of an oblong plate of rolled steel, which plate has the side edges of its forward portion serrated and forming racks, and the rear portion of the plate having two lugs consisting of portions struck from the plate and projecting laterally of one and the same side of the plate, which lugs are arranged in line edgewise and spaced widthwise of the plate a distance substantially equal to one-third of the width of the aforesaid rear portion of the plate and spaced equidistantly from opposite side edges respectively of said rear portion of the plate.

In testimony whereof, I sign the foregoing specification, in the presence of two witnesses.

GEORGE HECKLING.

Witnesses:

B. C. BROWN, N. L. MoDoNnnLn.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C." 

